Furnace for brick-kilns.



No. 642,356. Patented 1an;v so, |900.

o. c. oEHLER.

FURNACE FUR BRIGK KILNS (Applicatonvled Feb. 27, 1899.)

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No, 642,356. Patented .lan.r30, |900 0. C. UEHLER.

FUBNACE FR BRICK KILNS.

(Application filed Feb. 27, 1899.)

(No Model.) 2 Sheets-Sheet 2.

NTTED STATES FURNACE Fos BRICK-KILNS.

SPECIFICATION forming part of Letters Patent No. 642,356, dated January 30, 1900. Applica'ption filed February 27, 1899. Serial No. 706,981. (No model.)

To @ZZ whom it may concern:

Be it known that I, OTTO C. OEHLER, a citi- Zen of the United States of America, residing at St. Louis, in the State ofMissouri, haveinvented a certain new and useful Furnace for Briclc-Kilns, of which the following is such a full, clear, and exact description as will enable any one skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this speciiication.

My invention relates more particularly to that class of furnaces in which the fuel is irst heated to drive off the gases which are consu med in furnaces and after being thus coked is used to heat the next supply of fuel.

One object of my invention is to so arrange the furnace that the fuel will be more thoroughly and effectively coked.

Another object of my invention is to provide means for delivering the fuel from above onto the coking-table.

My invention consists in various novel features and details of construction, all of which are described in the following specification and pointed out in the claims affixed hereto.

In the accompanying drawings, which illustrate a furnace made in accordance with my invention, Figure 1 is a section on the line 1 1 of Fig. 3. Fig. 2 is a section ongthe line 22 of Fig. 4. Fig. 3 is a section on the line 3 3 of Fig. 1, and Fig. 4 is a front view of a portion of'the furnace.

Like marks of reference refer to similar parts in the several views of the drawings.

10 is the wall of the brick-kiln; 11, the arch of the furnace; 12, the front wall of the furnace; 13, the rear wall of the furnace, and 14 the side walls of the furnace. At each side of the dividing wall 15 are grate-bars 16, which divide the furnace into a combustionchamber 17 and ash-pits 18. Extending from the front of the dividing-wall 15 to the front wall 12 are a number of short grate-bars 19. Supported by the dividing-wall 15 and the side walls 14 are two coking-tables 22. At the rear of the coking-tables 22 are upwardlyprojecting portions 23, which prevent the fuel from falling off the table at the rear. 24 are passages from the combustion-chamber 17 to the brick-kiln. Arranged in front of the passages 24 are fire-walls 25. The front wall 12 has formed in it openings 26, preferably two in number. The openings 26 are provided with doors 27, which slide in guides 28. Secured to each of the doors 27 is a chain 29, which passes over a sheave 30 and is provided with a ring 3l, adapted to engage with pins 32 in the front wall 12.

In the furnace-arch 11 is formed an opening 34, in which are secured two fuel-receptacles 35. Each of the receptacles 35 is provided with a downwardly-swinging door 36. To each of the doors 36 is secured a chain 37, which passes over a sheave 3S and has secured to its end a handle 39, adapted to engage with a hook 40.

In operating my furnace the fuel is placed in the receptacles 35, and after the previous charge, which has been thoroughly coked, is removed from the tables 22 and placed on the grate-bars 16 under the tables the handles 39 are disengaged from the hook 40, so as to allow the doors 36 to swing downwardly into the position shown by dotted lines in Fig. 1. This discharges the fuel onto the coking-tables 22. The doors 36 can now be drawn back into position by means of the chains 37, thus allowing the admission of scarcely any cold air to the furnace during the operation of feeding. In removing the charge which has been coked the doors 27 are lowered by means of the chains 29, so as to allow the insertion of a tool to withdraw the coked mass from the top of the tables onto the grate-bars 16 and 19 in front of the said tables. The doors are now raised a slight distance, so as to allow the admission of a tool at the bottom of the same, and the coked material is `forced back on the bars and under the tables 22. The heat from the burning coke is thus applied directly to the coking-tables, thus causing the coking to be done more thoroughly and effectively than can be done where the heated products of combustion alone are passed through lines beneath the coking-table or where the heated products are simply allowed to pass over the coking-table. The gas from the fuel on the tables 22 passes through the openings 24 in the manner shown by the arrows in Fig. 1, while the heated products from the grates 16 pass up and thoroughly mingle with the gases, completely consuming them, thus preventing the formation IOO ot' smoke and more thoroughly utilizingl the fuel.

While I have shown my furnace as used in connection with a brick-kiln, I do not wish to limit myself to such use, as it may be used for many other purposes.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

l. In a furnace for brick-kilns or the like, a combustion-chamber provided with gratebars, an outlet leading from said combustionchamber to the kiln or other object to be heated, a coking-table situated in said cou1 bustion-chamber and above said grate-bars, an unobstructed space between said cokingtable and outlet, and a fire-wall situated between said grate-bars and outlet and leaving an opening between said @cking-table and firewall.

2. In a furnace for brick-kilns or the like, a combustion-chamber provided with gratebars, an outlet leading from said combustionchamber to the kiln or other objectto be heated, a door to give access to said combustion-chamber, a coking-table situated in said combustion-chamber and above said gratebars, an unobstructed space between said coking-table and outlet, and an unobstructed space between said coking-table and door forming acommunication between the part of the combustion-chamber above the coking-table and that below it.

3. In a furnace for brick-kilns or the like, a combustion-chamber provided with grat@ bars, a coking-table situated within said combustion-chamber and above said grate-bars, and a sliding door adapted to be lowered to give access to said @cking-table and raised to give access to said grate-bars.

In testimony whereof I have hereunto set my hand and affixed my seal in the presence of the two subscribing witnesses.

OTTO C. OEIILER. 

